<template>
    <BasicModal v-bind="$attrs" @register="register" :title="t('component.cropper.modalTitle')" width="800px" :canFullscreen="false" @ok="handleOk" :okText="t('component.cropper.okText')">
        <div :class="prefixCls">
            <div :class="`${prefixCls}-left`">
                <div :class="`${prefixCls}-cropper`">
                    <CropperImage v-if="src" :src="src" height="300px" :circled="circled" @cropend="handleCropend" @ready="handleReady"/>
                </div>

                <div :class="`${prefixCls}-toolbar`">
                    <Upload :fileList="[]" accept="image/*" :beforeUpload="handleBeforeUpload">
                        <Tooltip :title="t('component.cropper.selectImage')" placement="bottom">
                            <a-button size="small" preIcon="ant-design:upload-outlined" type="primary"/>
                        </Tooltip>
                    </Upload>
                    <Space>
                        <Tooltip :title="t('component.cropper.btn_reset')" placement="bottom">
                            <a-button type="primary" preIcon="ant-design:reload-outlined" size="small" :disabled="!src" @click="handlerToolbar('reset')"/>
                        </Tooltip>
                        <Tooltip :title="t('component.cropper.btn_rotate_left')" placement="bottom">
                            <a-button type="primary" preIcon="ant-design:rotate-left-outlined" size="small" :disabled="!src" @click="handlerToolbar('rotate', -45)"/>
                        </Tooltip>
                        <Tooltip :title="t('component.cropper.btn_rotate_right')" placement="bottom">
                            <a-button type="primary" preIcon="ant-design:rotate-right-outlined" size="small" :disabled="!src" @click="handlerToolbar('rotate', 45)"/>
                        </Tooltip>
                        <Tooltip :title="t('component.cropper.btn_scale_x')" placement="bottom">
                            <a-button type="primary" preIcon="vaadin:arrows-long-h" size="small" :disabled="!src" @click="handlerToolbar('scaleX')"/>
                        </Tooltip>
                        <Tooltip :title="t('component.cropper.btn_scale_y')" placement="bottom">
                            <a-button type="primary" preIcon="vaadin:arrows-long-v" size="small" :disabled="!src" @click="handlerToolbar('scaleY')"/>
                        </Tooltip>
                        <Tooltip :title="t('component.cropper.btn_zoom_in')" placement="bottom">
                            <a-button type="primary" preIcon="ant-design:zoom-in-outlined" size="small" :disabled="!src" @click="handlerToolbar('zoom', 0.1)"/>
                        </Tooltip>
                        <Tooltip :title="t('component.cropper.btn_zoom_out')" placement="bottom">
                            <a-button type="primary" preIcon="ant-design:zoom-out-outlined" size="small" :disabled="!src" @click="handlerToolbar('zoom', -0.1)"/>
                        </Tooltip>
                    </Space>
                </div>
            </div>
            <div :class="`${prefixCls}-right`">
                <div :class="`${prefixCls}-preview`">
                    <img :src="previewSource" v-if="previewSource" :alt="t('component.cropper.preview')"/>
                </div>
                <template v-if="previewSource">
                    <div :class="`${prefixCls}-group`">
                        <Avatar :src="previewSource" size="large"/>
                        <Avatar :src="previewSource" :size="48"/>
                        <Avatar :src="previewSource" :size="64"/>
                        <Avatar :src="previewSource" :size="80"/>
                    </div>
                </template>
            </div>
        </div>
    </BasicModal>
</template>
<script lang="ts">
    import type {CropendResult, Cropper} from './typing';

    import {defineComponent, ref} from 'vue';
    import CropperImage from './Cropper.vue';
    import {Space, Upload, Avatar, Tooltip} from 'ant-design-vue';
    import {useDesign} from '/@/hooks/web/useDesign';
    import {BasicModal, useModalInner} from '/@/components/Modal';
    import {dataURLtoBlob} from '/@/utils/file/base64Conver';
    import {isFunction} from '/@/utils/is';
    import {useI18n} from '/@/hooks/web/useI18n';

    const props = {
        circled: {type: Boolean, default: true},
        uploadApi: {
            type: Function as PropType<({file: Blob, name: string, filename: string}) => Promise<any>>,
        },
    };

    export default defineComponent({
        name: 'CropperModal',
        components: {BasicModal, Space, CropperImage, Upload, Avatar, Tooltip},
        props,
        emits: ['uploadSuccess', 'register'],
        setup(props, {emit}) {
            let filename = '';
            const src = ref('');
            const previewSource = ref('');
            const cropper = ref<Cropper>();
            let scaleX = 1;
            let scaleY = 1;

            const {prefixCls} = useDesign('cropper-am');
            const [register, {closeModal, setModalProps}] = useModalInner();
            const {t} = useI18n();

            // Block upload
            function handleBeforeUpload(file: File) {
                const reader = new FileReader();
                reader.readAsDataURL(file);
                src.value = '';
                previewSource.value = '';
                reader.onload = function (e) {
                    src.value = (e.target?.result as string) ?? '';
                    filename = file.name;
                };
                return false;
            }

            function handleCropend({imgBase64}: CropendResult) {
                previewSource.value = imgBase64;
            }

            function handleReady(cropperInstance: Cropper) {
                cropper.value = cropperInstance;
            }

            function handlerToolbar(event: string, arg?: number) {
                if (event === 'scaleX') {
                    scaleX = arg = scaleX === -1 ? 1 : -1;
                }
                if (event === 'scaleY') {
                    scaleY = arg = scaleY === -1 ? 1 : -1;
                }
                cropper?.value?.[event]?.(arg);
            }

            async function handleOk() {
                const uploadApi = props.uploadApi;
                if (uploadApi && isFunction(uploadApi)) {
                    const blob = dataURLtoBlob(previewSource.value);
                    try {
                        setModalProps({confirmLoading: true});
                        const result = await uploadApi({name: 'file', file: blob, filename});
                        emit('uploadSuccess', {source: previewSource.value, data: result.data});
                        closeModal();
                    } finally {
                        setModalProps({confirmLoading: false});
                    }
                }
            }

            return {
                t,
                prefixCls,
                src,
                register,
                previewSource,
                handleBeforeUpload,
                handleCropend,
                handleReady,
                handlerToolbar,
                handleOk,
            };
        },
    });
</script>

<style lang="less">
    @prefix-cls: ~'@{namespace}-cropper-am';

    .@{prefix-cls} {
        display: flex;

        &-left,
        &-right {
            height: 340px;
        }

        &-left {
            width: 55%;
        }

        &-right {
            width: 45%;
        }

        &-cropper {
            height: 300px;
            background: #eee;
            background-image: linear-gradient(45deg,
            rgba(0, 0, 0, 0.25) 25%,
            transparent 0,
            transparent 75%,
            rgba(0, 0, 0, 0.25) 0),
            linear-gradient(45deg,
            rgba(0, 0, 0, 0.25) 25%,
            transparent 0,
            transparent 75%,
            rgba(0, 0, 0, 0.25) 0);
            background-position: 0 0, 12px 12px;
            background-size: 24px 24px;
        }

        &-toolbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 10px;
        }

        &-preview {
            width: 220px;
            height: 220px;
            margin: 0 auto;
            overflow: hidden;
            border: 1px solid @border-color-base;
            border-radius: 50%;

            img {
                width: 100%;
                height: 100%;
            }
        }

        &-group {
            display: flex;
            padding-top: 8px;
            margin-top: 8px;
            border-top: 1px solid @border-color-base;
            justify-content: space-around;
            align-items: center;
        }
    }
</style>
